Dubious Hippolytus Fragments Finally, hear Paul as he speaks boldly, and mark how clearly he discovers these: "Beware of evil workers, beware of the concision.[40] Cyprian Epistle LIV [62] A Treatise Against the Heretic Novatian by an Anonymous Bishop And although it is written that the dogs should remain without, and the apostle has taught that these same dogs must be shunned, as we read, for he says, "Beware of dogs, beware of evil workers,"[1]